Over the past 20 years, I've read several of Morgan Llewellyn's books, including "Lion of Ireland," "Bard," "Grania,""1916," "1921," and the companion novel to "The Greener Shore," the book "Druids." I have always admired her ability to weave fact and fiction, using the latter to flesh out the former into compelling reads that really make you feel as if you're there and can understand the characters, the landscape, and the times.
This novel, however, disappointed me. There is material in this that is drawn from historical, archaeological, scholarly, and literary sources. However, there's also MUCH poetic license taken. Please don't read this thinking you're getting any kind of accurate portrayal of the ancient druids. This is a fantasy story, like "Mists of Avalon" or "Lord of the Rings."
And, even as stories go, it was less a story and more a spiritual credo. It had a kind of "Celestine Prophecy" "Bridge Across Forever" quality to it, as if the novel were simply a vehicle for expressing a particular set of (very modern New Age) beliefs. The writing was saturated with repetitious talk about "the pattern," "the Source," the sanctity of nature, the experience of death, reincarnation, etc., not in a way which engaged the reader nor furthered any plot, but as an end in itself.
The novel is written in the first person, from Ainvar's point of view, and most of it takes place entirely in his head as he ruminates over past failures, current failures, possible future failures, the nature of the universe, the perfection of nature, the magic which has seemingly abandoned him, crises of belief, and the hatred he has for Caesar and the Romans. But very little actually HAPPENS. Ainvar is little more than a spectator watching as various, disconnected activities, triumphs and tragedies, swirl around him. There are characters who seem terribly important to him -- such as Red Wolf, his wife Briga, his lost daughter Maia, and the fairy spirit woman of Ireland -- but these characters are mostly absent from the novel and the promise of their importance never plays out, other than as macguffins for sparking Ainvar's metaphysical and mental meanderings.